文档详情

机器设计-综合方法版p1416.pdf

发布：2024-09-19约2.59万字共6页下载文档
文本预览下载声明

MACHINEDESIGN-AnIntegratedApproach,4thEd.14-16-1

PROBLEM14-16

Statement:Problem6-16describesatrackforbowlingballsthatare4.5-and2.5-lbweight.Designa

spring-loadedlauncherthatwillallowquadriplegicbowlerstolaunchtheballsdownthe

bowlingalleyfromthepointwherethetrackofProblem6-16dropsthemwithonlyaswitch

closurethatreleasesthelauncher.Thelaunchersplungerwillbecockedbyanassistantand

theenergystoredinthehelicalcompressionspring,whichyouwilldesign,willdrivethe

plungerintotheballandrollitdownthebowlingalley.

6

Given:BallweightW2.5lbfShearmodulusG11.510psi

ball

DesignChoices:

Clashallowanceα0.10Musicwireproperties:

SpringindexC12StrengthA184.65ksib0.1625

DesignsafetyfactorN2Setafterwinding,unpeened

fsd

1

Ballinitialvelocityv150inseciSquaredandgroundends

DeflectiontoF

显示全部
相似文档